Recent content by swcaddesigner

To All, You all are awesome and thanks so much for your valuable input. Based on all the feedback a eccentric cweight might be the best approach. I can afford a slight rock. My best guess at this point stationary A should be 300 pounds. A counter weight hanging off the bottom and...

My labeling is all messed up. B rotates at 1 rpm and we need A to be stationary, My bad. Thanks so much for pointing that out.

Hello again, I have a new pdf showing the gyroscope cweight to keep B from rotating. Guys , Will this fly? Repeat I have a rotating structure A that rotates at a slow 1 rpm. Attached to one end via a turn-table bearing I have structure B. I do not want B to rotate and cannot fix it to any...

Thanks All, A gyro type is what I had in mind. I think it would work but not sure how to size a wheel. Yes. Shaft A is horizontal. I have room for a large weight at bottom but as you pointed out it still could move slightly. Magnet would work except anything off the sides,top or bottom is...

Calling on hard-core mechanical engineers. I am an ME but this is above me. I have a rotating structure A that rotates at a slow 1 rpm. Attached to one end via a turn-table bearing I have structure B. I do not want B to rotate and cannot fix it to any thing external. There will be a very...

Awesome ideas and advice. Thanks. I was not aware of all the information out on the web. Thanks again. Tony

Hello, Any ideas on a linkage to move a plate in horizontally (approx 6 ft) , stop, then raise vertically (approx 1 ft) I would like to have one drive (linear actuator, etc) for both motions Maybe some four bar linkage? I cannot figure out a simple design. Any ideas would be most appreciated.

Thanks. I have been checking out the Rotek Slewing Bearing and thier engineering assistance. I am doing a first rough pass but will employ a PE with Cosomos experience soon. Thanks for the advise on counter weighting.

Thanks for asking. Spacing between the bearing is 80 in but can increase some if needed.

Hello, Trying to size a bearing/s that can take an offset loads. Approximately 5000 lbs @ 131 inchs & 2500 lbs @ 9 in away from first bearing or pair. Bearings are mounted vertically. I am allowed 1mm deflection and speed is very slow 5 rmp. Smallest bore the better. We also might add...

Hey Guys, You saved me. Thanks for your advice and help. I used the Parker calculator and obtained the info. Thanks again.

Thanks btrueblood & clyde for you reply. Still have issuses with oring groove size. The 9.125 bore is fixed. I can make the plug and groove diameter anything that holds a vac seal. I also would like to use a standard oring. Maybe a 446? I have used the on-line calculator but the values do...

Using the standard Parker Oring design catalog (yes, I still use one) It tell you everthing, piston size, groove dimensions, etc for a std 9.000 bore. I am slightly non-standard. 9.125 bore. How can I re-size all the values and still hold a vacuum? Any help would be appreaciated.

Hello, I am needing to "cool" a 8 inch od pipe and ideally a quick install water jacket or belt to chill outside surface. 1 inch wide belt with water connections. We have chilled water. Just something to take the heat 200 degree away. Is there such a product? I can always design my oen but...